Playing Octave --- 8th Full Tone

One of the easiest ways to learn ocatves is to take a simple song like "Oh Susana" which starts on the 4b or C note on a C harp. Now blow that single 4 and slide the harmonica to the right and cover all the first 4 holes of the harp with your lips, open your lips enough to blow all 4 notes at the same time. Now take just the tip of your tounge and cover holes 2&3. You should now be blowing 1&4 and getting the octave.It should sound organ like, a full sound. Now play "Oh Susana" like you normally do using this octave approach. This type of playing is very useful when playing back rhythms for Blues. Hope this helps someone and Good Luck..